wgpu_core::command::bundle: Consolidate pipeline and vertex state. #2769
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jimblandy
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Refactor `wgpu_core::command::bundle::State` to more closely resemble the internal slots of a WebGPU `GPURenderBundleEncoder`, and add validation required by the WebGPU specification. Use `Option` to represent state that may be left unset on the encoder: specifically, the pipeline and vertex buffers. (Previous commits have already addressed index buffers and bind groups.) Use `.ok_or`, etc. for unwrapping, to ensure that encoding state errors are reported. Consolidate state derived from the pipeline in a new `PipelineState` struct. Remove `wgpu_core::command::bundle::PushConstantState::is_dirty`; just represent push constant state as a vector of `PushConstantRange` values. It's sufficient to simply zero the push constants whenever the vector is non-empty. Rename `bundle::State::flush_push_constants` to `zero_push_constants`a. This is not a "flush pending state changes" function like all the others; it just ensures that each pipeline's push constant state is initialized.
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I hope this isn't too much stuff jammed into one PR. I think the easiest way to see what's going on is to look at the new definition of |
cwfitzgerald
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Jun 15, 2022
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Refactor
wgpu_core::command::bundle::Stateto more closely resemble the internal slots of a WebGPUGPURenderBundleEncoder, and add validation required by the WebGPU specification.Use
Optionto represent state that may be left unset on the encoder: specifically, the pipeline and vertex buffers. (Previous commits have already addressed index buffers and bind groups.) Use.ok_or, etc. for unwrapping, to ensure that encoding state errors are reported.Consolidate state derived from the pipeline in a new
PipelineStatestruct.Remove
wgpu_core::command::bundle::PushConstantState::is_dirty; just represent push constant state as a vector ofPushConstantRangevalues. It's sufficient to simply zero the push constants whenever the vector is non-empty.Rename
bundle::State::flush_push_constantstozero_push_constants. This is not a "flush pending state changes" function like all the others; it just ensures that each pipeline's push constant state is initialized.